Lubricating device.



D. W. BARR. LUBRIGATING DEVICE. APPLICATION FILEDIMAR. 2. m

1,259 Patented Mar. 19, 1918.

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DAVID W. BARR, 0F WATEBLOO, IOWA, ASSIGNOR T0 FRICTION PROOF LUBRICANTCOMPANY, OF DES MOINES, IOWA.

LUBRICATING DEVICE.

To all whom it may concern:

Be it known that 1, DAVID W. BARR, a citizen of the United States ofAmerica, and a resident of \Vaterloo, Blackhawk county, Iowa, haveinvented certain new and useful Improvements in Lubricating Devices, ofwhich the following is a specification.

My invention relates to improvements in lubricating devices;particularly to that type such as is used manually and calledgrease-guns for forcing grease into bearings, and the object of myimprovement is to supply for this purpose a device adapted to operateupon the hardened greas or lubricant in a container, by graduallyexpelling the contents, employing a movable part of the container as apropelling element.

This object I have accomplished by means which are hereinafter describedand claimed, and which are illustrated in the accompanying drawings, inwhich:

Figure 1 is a longitudinal central sectional view of one of my improvedmovable bottom containers, as" associated with the clamping andpropelling parts cooperatively used therewith for expelling the contentsthereof.

.Fig. 2 is an elevation, on a diminished scale, of a container'with aconical ejectortop mounted thereon, and propelling mechanism clampedthereon for pushing inwardly the movable bottom of the container.

Figs. 3 and 4 are respectively plan views of the upper and lower partsof the conical ejector top of the device.

Fig. 5 is a detail perspective view of related parts of said ejector-topand the fastening-means therefor.

Fig. 6 is a longitudinal section of said ejector-top and of a portion ofthe container upon which it is fitted, and Fig. 7 is a longitudinalsection of the top of the container, including its removable cap,beforethe removal thereof.

Fig. 8 is an enlarged fragmentary view of abutting portions of thecontainer and of its bottom closure.

Similar numerals of reference denote cor: responding parts throughoutthe several views.

An important feature of my improved grease-gun is the grease-container1, which is ametal can having the inwardly-flanged top ring 2, in whichthe usual removable cap 6 is fitted for a closure. The bottom of theSpecification of Letters Patent.

Application filed March 2, 1916. Serial No. 81,652.

can is composed of a metal cup 5 over which is fitted a like cup 4 madeof fiber, or pressed paste-board. This bottom is pressed into place bymeans of suitable machinery, and the lower edge of the can afterwardinverted or turned over at 3 to lock the bottom from downwarddisplacement. and form a tight joint therewith. The can is filled withhardened or viscous grease 26.

The means employed to discharge the contents of the can is a circularpush-head 7 resting in contact withthe under face of the can bottom 45and centrally orificed to receive the rotatable diminished upper end 8of a threaded shaft 11, the latter provided at or near its other endwith a cross-piece or crank-handle 12, secured by a set-screw 13. Uponthe shaft 11 is mounted a circular plate 9 to work thereon and being oflarger diameter than the push-head f1, and standards 20 are mountedabout thls plate 9 having threaded upper ends carrying the wing-nuts 22.The can 1, after its closure -6 has been removed, is placed upon thepush-head and within the surrounding standards 20.

The numeral 16 denotes a conical hollow discharge-head having a widenedbase-ring 14 containing a downwardly-directed annular channel 21, inwhich is seated a rubber or elastic sealing ring or gasket 24, whichseals the joint between the discharge-head and the ring 2 0n the canwhen brought together as shown in Fig. 6. In the upper end of thedischarge-head 16 ismounted a communicating nozzle 17 provided with a removable end-cap 18.

The expanded part 14 of the dischargehead 16 has ears 15 with innervertical circular seats 23 open at one side tangentially to receive theupper ends of the standards 20. The wing-nuts 22 are used to clamp uponthe ears, with their lower coned parts 25, as shown in Fig. 5 releasablylocked in the inwardly coned hollows or sockets 19 of said ears 15, thuspreventing escape of the standards from said ears.

The cap 18 of the nozzle 17 having been removed, the crank-handle 12 maybe employed to rotate the shaft 11, causing the plate 9 to push the head7 against the can bottom 45, carrying the latter upward whose upwardlycupped edge forms a piston to push the rease 26 out of the can andthrough the discharge-head 16 and spout or nozzle 17, the elastic outerlayer or edge of the outer cup 5 serving as a packing to preventexudation of grease from the bottom of the can, during the action of thedevice.

It will be seen that containers, such as that described, may be suppliedin said form already filled, for consumers, and may be discarded whenemptied. The bottom 45 of the can, when the can is emptied, cannot be benoticed that the cupped edges or flanges of said bottom are flaredoutwardly.- This outwardly flared part helps to prevent the pushing backof the bottom by ordinary means, since the obliquity of the edge makesit tilt when pushed down.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is:

1; A device of the character described,

comprising a container having an open top and a movable bottom, adischarge-nozzle seated removably upon the open end of the container andhaving hook-shaped ears the cavity of each being reamed out conically atthe upper end, a pusher-head smaller in diameter than the interior ofthe container placed against the container-bottom centrally, aclamping-plate placed against the lower edge of the container and havingthreaded standards fixed thereon and passed along the exterior of thecontainer and through the cavities of said ears, by way of theside-openings of their cavities, said sideopenings all facing in onedirection, thumbnuts on said standards with coned lower parts adapted tofit the conedupper parts of the cavities in said ears to lock thestandards therein, said clamping-plate having a centrally threadedorifice and a threaded shaft mounted in said orifice rotatably andhaving its upper end rotatably connected to the center of saidpusher-head.

2. In a de ice of the character described, a container having anopentop, and bottom closure mounted therein for longitudinal displacementtherein toward said open end only, said closure having itscircumferential edge crimped outwardly and downwardly conically towardthe inner wall of the container, and the lower end of the containercrimped inwardly to overlap the crimped part of the closure.

Signed at Waterloo, Iowa, thls 19th day of February, 1916.

DAVID W. BARR. Witnesses:

G. G. KENNEDY, PEARL STANTON.

